🙅 Bind a WebAPK to its "host" browser.

web_apks/minting_example/src/org/chromium/minting/MainActivity.java

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.minting;
 
 import android.app.Activity;
 import android.content.ComponentName;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.PackageManager.NameNotFoundException;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.os.Bundle;
 import android.util.Base64;
 import android.util.Log;
 import android.view.View;
 import android.view.View.OnClickListener;
 
 import org.chromium.minting.lib.common.WebAPKConstants;
+import org.chromium.minting.lib.common.WebAPKUtils;
 
 import java.io.ByteArrayOutputStream;
 
 /**
  * Example client activity for a minted APK.
  */
-public class MainActivity extends Activity implements OnClickListener {
+public class MainActivity extends Activity {
     private static final String EXTRA_ID = "org.chromium.chrome.browser.webapp_id";
     private static final String EXTRA_ICON = "org.chromium.chrome.browser.webapp_icon";
     private static final String EXTRA_NAME = "org.chromium.chrome.browser.webapp_name";
     private static final String EXTRA_SHORT_NAME = "org.chromium.chrome.browser.webapp_name";
     private static final String EXTRA_URL = "org.chromium.chrome.browser.webapp_url";
     private static final String EXTRA_MAC = "org.chromium.chrome.browser.webapp_mac";
     private static final String EXTRA_SCOPE = "org.chromium.chrome.browser.webapp_scope";
     private static final String EXTRA_MINTING_PACKAGE_NAME = "EXTRA_MINTING_PACKAGE_NAME";
-    private static final String EXTRA_CALLER_PACKAGE_NAME = "EXTRA_CALLER_PACKAGE_NAME";
     private static final String META_DATA_HOST_URL = "hostUrl";
     private static final String META_DATA_MAC = "mac";
     private static final String META_DATA_SCOPE = "scope";
 
     private static final String TAG = "cr_MintingAPKExample";
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
@@ skipping 26 matching lines @@
             Bitmap icon = BitmapFactory.decodeResource(getResources(),
                     org.chromium.minting.R.drawable.app_icon);
             encodedIcon = encodeBitmapAsString(icon);
             Log.w(TAG, "Url of the minted APK: " + url);
             Log.w(TAG, "webappId of the minted APK: " + webappId);
             Log.w(TAG, "name of the minted APK:" + name);
         } catch (NameNotFoundException e) {
             e.printStackTrace();
         }
 
-        SharedPreferences prefs =
-                getSharedPreferences(MintingApplication.MINT_PREFS, MODE_PRIVATE);
-        String chromePackageFromPref = prefs.getString(MintingApplication.HOST_PACKAGE_PREF,
-                MintingApplication.DEFAULT_CHROME_PACKAGE_NAME);
-        String callerPackageName = intent.getStringExtra(EXTRA_CALLER_PACKAGE_NAME);
-        // Update value if needed
-        if (callerPackageName != null && !callerPackageName.equals(chromePackageFromPref)) {
-            prefs.edit().putString(MintingApplication.HOST_PACKAGE_PREF, callerPackageName)
-                    .apply();
-            Log.d(TAG, "Chrome with package " + callerPackageName + " is new host");
-        }
-        String chromePackageName = callerPackageName == null ? chromePackageFromPref :
-                callerPackageName;
-
         Intent newIntent = new Intent();
-        newIntent.setComponent(new ComponentName(chromePackageName,
+        newIntent.setComponent(new ComponentName(WebAPKUtils.getHostBrowserPackageName(this),
                 "org.chromium.chrome.browser.webapps.WebappLauncherActivity"));
         newIntent.putExtra(EXTRA_ID, webappId);
         newIntent.putExtra(EXTRA_NAME, name);
         newIntent.putExtra(EXTRA_SHORT_NAME, name);
         newIntent.putExtra(EXTRA_MINTING_PACKAGE_NAME, packageName);
         newIntent.putExtra(EXTRA_SCOPE, scope);
         newIntent.putExtra(EXTRA_URL, url);
         newIntent.putExtra(EXTRA_MAC, mac);
         newIntent.putExtra(EXTRA_ICON, encodedIcon);
         startActivity(newIntent);
         finish();
     }
 
-    @Override
-    public void onClick(View v) {
-
-    }
 
     /**
      * Compresses a bitmap into a PNG and converts into a Base64 encoded string.
      * The encoded string can be decoded using {@link decodeBitmapFromString(String)}.
+     *

[Xi Han, 2016/04/15 14:46:49]

Revert?

[Yaron, 2016/04/15 15:46:58]

Done.

      * @param bitmap The Bitmap to compress and encode.
      * @return the String encoding the Bitmap.
      */
     private static String encodeBitmapAsString(Bitmap bitmap) {
         if (bitmap == null) return "";
         ByteArrayOutputStream output = new ByteArrayOutputStream();
         bitmap.compress(Bitmap.CompressFormat.PNG, 100, output);
         return Base64.encodeToString(output.toByteArray(), Base64.DEFAULT);
     }
 
     /**
      * Returns whether a url is valid.
+     *

[Xi Han, 2016/04/15 14:46:49]

Please revert.

[Yaron, 2016/04/15 15:46:58]

Done.

      * @param url The url to check.
      * @return Whether the url is valid.
      */
     private static boolean isUrlValid(String url) {
         if (url == null) {
             return false;
         }
 
         return url.startsWith("http:") || url.startsWith("https:");
     }
 }